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PREP08 Test 1
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The author's attitude toward Twigg's work is best characterized as which of the following?
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OG18-数学分册
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The annual interest rate earned by an investment increased by 10 percent from last year to this year. If the annual interest rate earned by the investment this year was 1 percent, what was the annual interest rate last year?
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What is the value of $${x}^{2}{y}{z}+{x}{y}^{2}{z}+{x}{y}{z}^{2}$$(1) x+y+z=18(2) xyz=10
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Mary passed a certain gas station on a highway while traveling west at a constant speed of 50 miles per hour. Then, 15 minutes later, Paul passed the same gas station while traveling west at a constant speed of 60 miles per hour. If both drivers maintained their speeds and both remained on the highway for at least 2 hours, how long after he passed the gas station did Paul catch up with Mary?
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PREP07 Test 1
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The positive integer k has exactly two positive prime factors, 3 and 7. If k has a total of 6 positive factors, including 1 and k, what is the value of k?(1) $${3}^{2}$$ is a factor of k.(2) $${7}^{2}$$ is NOT a factor of k.
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A certain wooded lot contains 56 oak trees. How many pine trees does the lot contain?(1)The ratio of the number of oak trees to the number of pine trees in the lot is 8 to 5.(2)If the number of oak trees were increased by 4 and the number of pine trees remained unchanged, the ratio of the number of oak trees to the number of pine trees in the lot would be 12 to 7.
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If both x and y are nonzero numbers, what is the value of $$\frac{y}{x}$$?(1) x = 6(2) $${y}^{2}={x}^{2}$$
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Is $${x}<{0}$$?(1) $$-2x >0$$(2) $$x^3<0$$
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A sum of $200,000 from a certain estate was divided among a spouse and three children. How much of the estate did the youngest child receive?(1) The spouse received $$\frac{1}{4}$$ of the sum from the estate, and the oldest child received $$\frac{1}{4}$$ of the remainder.(2) Each of the two younger children received $12,500 more than the oldest child and $62,500 less than the spouse.
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If $$\mathbf{y}={4}+({x}-{3})^{2}$$, then y is least when x =
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If $$\frac{1}{2}$$ of the money in a certain trust fund was invested in stocks, $$\frac{1}{4}$$ in bonds, $$\frac{1}{5}$$ in a mutual fund, and the remaining $10,000 in a government certificate, what was the total amount of the trust fund?
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PREP07 Test 1
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Is x + y negative?(1)x is negative.(2)y is positive.
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PREP07 Test 1
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How many of the students in a certain class are taking both a history and a science course?(1) Of all the students in the class, 50 are taking a history course.(2) Of all the students in the class, 70 are taking a science course.
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PREP07 Test 1
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What is the price for a certain meal listed on a menu?(1) The total paid for the meal, sales tax, and gratuity is $10.84.(2) The sales tax on food is 6 percent.
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PREP07 Test 1
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3 teaspoons = 1 tablespoon4 tablespoons = $$\frac{1}{4}$$ cupAccording to the information above, how many teaspoons are equal to $$\frac{3}{8}$$ cup?
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PREP07 Test 1
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During a sale, for each shirt that Mark purchased at the regular price, he also purchased a shirt at half the regular price. How many shirts did Mark purchase during the sale?(1)The regular price of each of the shirts that Mark purchased during the sale was $21.50.(2)The total of the prices for all the shirts that Mark purchased during the sale was $129.00.
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PREP07 Test 1
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 The circle shown has center O and radius 4. What is the area of the shaded region?
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PREP07 Test 1
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At a certain pet shop,$$\frac{1}{3}$$ of the pets are dogs and $$\frac{1}{5}$$ of the pets are birds. How many of the pets are dogs?(1)There are 30 birds at the pet shop.(2)There are 20 more dogs than birds at the pet shop.
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PREP07 Test 1
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If x is a positive integer, is x < 16 ?(1)x is less than the average (arithmetic mean) of the first ten positive integers.(2)x is the square of an integer.
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PREP07 Test 1
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A certain taxi company charges $3.10 for the first $$\frac{1}{5}$$ of a mile plus $0.40 for each additional $$\frac{1}{5}$$ of a mile. What would this company charge for a taxi ride that was 8 miles long?
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